HVAC Contractors Guelph — Transparent Pricing, Same-Day Service
Guelph homeowners trust Go Lime for reliable, honest heating and cooling service. Whether your furnace needs urgent repair, your air conditioner is due for replacement, or you're ready to upgrade to a high-efficiency heat pump, Go Lime delivers expert HVAC installation and service across Guelph and Wellington County — with upfront pricing, flexible monthly payment plans, and a 30-day money-back guarantee on every installation.
Why Guelph Homeowners Choose Go Lime
Guelph is one of Ontario's fastest-growing cities — and its housing stock reflects that growth. From older heritage homes in Downtown Guelph, The Ward, and Old University to newer family developments in Westminster Woods, Kortright Hills, and Clairfields in the south end, Guelph homes span a wide range of ages, sizes, and heating and cooling requirements.
Proudly Canadian
We're 100% Canadian-owned, supporting local businesses and communities. Choosing Go Lime means investing in Canada.
Complete Transparency
No hidden fees. No vague estimates. We provide upfront pricing before any work begins, so you're never caught off guard on your invoice.
Same-Day HVAC Service in Guelph
When your heating fails in the middle of a Guelph winter or your AC quits during a summer heatwave, you need a contractor who responds fast. Go Lime works to get a licensed technician to your Guelph home the same day you call. Call early to maximize same-day availability.
Customer Satisfaction
Join over 18,000 satisfied customers who've rated us highly for our exceptional service and reliability.
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Completely Online
As Canada's first fully online, commission-free home comfort company, Go Lime puts convenience and control directly in your hands: no sales appointments, no awkward kitchen table conversations.
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EnergyStar® Certified Products
All of our systems are energy-efficient and built to perform in Ontario's climate, helping you reduce utility bills while keeping your family comfortable year-round.
HVAC Services in Guelph, Ontario
Water Heater Installation & Replacement
From tank water heaters to high-efficiency tankless units, Go Lime has Guelph covered for hot water solutions at every budget. We carry EnergyStar® certified models and offer flexible monthly plans so you can upgrade without the upfront sticker shock.
Endless Hot Water on Demand in Guelph
Upgrade to continuous comfort with our ultra-efficient tankless water heaters starting at just $44.95/month. Designed to save space, reduce energy bills, and deliver hot water on demand, it’s the modern solution for busy Guelph homes.
Furnace Installation & Repair
Ontario winters demand a furnace you can count on. Whether you're replacing an aging unit or dealing with an unexpected breakdown, Go Lime installs and services high-efficiency gas furnaces from leading brands like Lennox. Our technicians are fully licensed and ensure every installation meets TSSA standards.
Rebates Available
Heat Pump Installation
Heat pumps are fast becoming Guelph's most popular upgrade and for good reason. A single system heats your home in winter and cools it in summer, all while using significantly less energy than traditional equipment. Go Lime installs Lennox heat pumps designed to perform efficiently even in sub-zero Ontario temperatures.
Air Conditioner Installation & Repair
Guelph summers can be relentless. A properly sized, professionally installed air conditioner makes all the difference. We help you choose the right system for your home's square footage and cooling needs, then install it cleanly and quickly.
Boiler Service & Replacement
Many older Guelph homes rely on boiler systems for radiant heating. Our technicians are experienced with residential hot water boilers and can handle replacements, repairs, and annual servicing to keep your system running safely and efficiently.
Water Filters
Cleaner Water. Healthier Living.
Protect your family with advanced water filtration that removes impurities and improves taste right from the tap. Starting at just $19.95/month, our systems are designed for Guelph homes to deliver safe, great-tasting water every day.
How the Partnership Program Works
Getting started with Go Lime is simple
Getting started with Go Lime is simple
1. Choose Your Product
2. Choose How You Pay & Place Your Order
3. Order Confirmation
4. Professional Installation
5. Receive Documentation & Support
Getting started with Go Lime is simple
1. Choose Your Product
2. Choose How You Pay & Place Your Order
3. Order Confirmation
4. Professional Installation
5. Receive Documentation & Support
30-Day Money-Back Guarantee
Not Happy? Full Refund. No Questions.
Full 30 Days
Take a whole month to experience the difference. No rush, no pressure.
100% Refund
Get every penny back. We'll even remove the water heater at no cost.
No Questions
Simple process. If you're not satisfied, just let us know. That's it.
Risk-free promise backed by thousands of happy customers
Peace of Mind. Covered Year-Round.
From water heaters to air conditioners, we’ve got you covered with affordable, worry-free coverage that keeps comfort running smoothly - no surprise costs.
Introducing the Go Protect Plan
Protect your appliances with coverage that ensures peace of mind. Go Protect has got you covered for repairs or replacements, so you can focus on what matters.
Need More Fexibility?
Enjoy comfort on your terms with Go Flex- our flexible payment option that lets you spread out the cost of your equipment and service. No large upfront payments, no surprises just predictable monthly plans that work with your budget.
We Plant Goodness
Every order supports reforestation. For each purchase made, we plant a tree because real change starts with simple actions. Place an order, and we’ll plant a tree on your behalf.
Helpful Guides for Guelph Homeowners
Not sure if you need a repair or a full replacement? Wondering if a heat pump is right for your home? Our guides cut through the confusion.
News
Your Rights as an Ontario Homeowner When Your HVAC System Gets Red Tagged
Getting a red tag on your furnace, water heater, or any other gas appliance is stressful. The gas is off, the house is getting cold, and a technician is...
News
What Is a Pressure Relief Valve and Why Your Water Heater Tank Could Explode Without It
There is a small, inexpensive valve on the side of your water heater that most homeowners have never noticed, never touched, and never thought about. It looks almost insignificant...
News
Heat Pump Compressor Failure: Replace It or Replace the Whole Unit?
Your heat pump stops heating. Or cooling. Or both. A technician comes out, runs diagnostics, and delivers the words no homeowner wants to hear: the compressor has failed. Then...
Neighbourhoods We Serve in Guelph
Go Lime provides HVAC installation, repair, and maintenance across all Guelph neighbourhoods, including:
Central & Downtown Guelph
- Downtown Guelph
- The Ward
- Old University
- St. Patrick's Ward
- Riverside Park
South Guelph
- Westminster Woods
- Kortright Hills
- Kortright West
- Clairfields
- Pineridge
- Pine Ridge
East Guelph
- Grange Road
- East Guelph
West Guelph
- West Guelph
- Brant Avenue
North Guelph
- North Guelph
- Exhibition Park
Also serving surrounding communities:
Cambridge, Kitchener, Waterloo, Fergus, Elora, Rockwood, and communities across Wellington County.
Not sure if we cover your address? Call us at 1-877-747-8292 — we'll confirm right away.
What Our Customers Say About Us
What Our Customers Say About Us
4.8 ★ out of 5 based on 7,000+ reviews
Jenny Tam
Mehdi did a great job installing my water heater. He was very patient and explained to me what was replaced and he also confirmed that the old heater will be return to my old provider. He is awesome. Higly recommended:)
Baba Gowda
Mehdi from Golime was very helpful and installed all the equipment quickly and guided me how to use and monitor.. great service.
Mahad
Ali and Mehdi were fantastic today. They scheduled the job and came early and worked amazingly to finish and make sure the water heater was working. After three weeks of dealing with Reliance, I'm happy they were able to provide a quick resolution.
Mahad
They scheduled the job and came early and worked amazingly to finish and make sure the water heater was working. After three weeks of dealing with Reliance, I'm happy they were able to provide a quick resolution.
Super Dave
Mehdi and his team from GoLime did an amazing job with my new heat pump installation.
He was fast, clean and organized.
He took extra care in routing the lines and left the place neater than when he showed up.
I’m really excited to have fresh COLD air again in the home.
Thanks Mehdi and the team at GoLime!
Highly Recommended!!!
Stella Keri
I have had a great experience with GoLime when they installed a new water heater tank and chimney liner at my home today. From start to finish, the service was outstanding. Murry and MacKenzie were professional, knowledgeable and efficient and completed the work in a timely manner and with great attention to detail. I really appreciated their clear communication and respectful approach throughout the entire process. Thank you again for a job well done.
Stella
I really appreciated their clear communication and respectful approach throughout the entire process. Thank you again for a job well done.
Cassey Tan
An incredibly simple purchase experience using GoLime.com to replace my water heater. Their installation team was quick, professional and efficient. The sales and dispatch team took the time to listen and address concerns and responded quickly. Thank you GoLime team!
Mina Sidaros
Ervin was very professional and service was fast and on time. I would recommend him for any water heater issues.
Suzanne Johnson
Of course, my air conditioner stopped working just before the heat wave last week. I was under a contract with a big-name company, but I was not pleased with their service. A friend recommended GO lime, and it was the best recommendation. I got a heat pump, tankless water heater, and furnace installed. I contacted them on June 19, and they installed it on June 21. Amir, Hossein, Milad, and Mehrdad spent all day here setting everything up. They explained everything to me and cleaned up when they were done. Go Lime went above and beyond. I needed an electrical outlet for my tankless water heater, and they had an electrician come out at no cost to me! I am not sure how they keep their prices so low and still have such excellent customer service! I highly recommend Go Lime. Do not hesitate, they are a wonderful company.
How much does a new furnace cost in Guelph?
Furnace installation in Guelph typically ranges from $2,500 to $5,500 depending on the unit size, efficiency rating, and any ductwork modifications needed. Go Lime provides upfront pricing before booking, and Go Flex plans are available to spread the cost monthly.
How long does HVAC installation take?
Most standard furnace or air conditioner installations take 4–6 hours. Heat pump installations may take a full day. Tankless water heater replacements typically take 2–4 hours.
Do you offer same-day HVAC service in Guelph?
Yes. Same-day installation and service is available based on technician availability. Call us early in the day for the best chance of a same-day appointment.
What brands do you carry?
Go Lime carries high-efficiency systems from Lennox, Bradford White, Navien, Rheem, and other leading manufacturers. We'll recommend the right brand and model for your home's specific needs.
Are your technicians licensed?
Yes. All Go Lime technicians are fully licensed and insured, and all gas work is completed in compliance with TSSA (Technical Standards and Safety Authority) regulations.
What is a heat pump and is it right for my Guelph home?
A heat pump is a single system that both heats and cools your home using electricity and refrigerant technology. Modern cold-climate heat pumps work efficiently even in temperatures well below freezing, making them an excellent fit for Guelph's winters. They're especially popular for homeowners looking to reduce reliance on natural gas.
Need a hand? We’re here to help.
To receive assistance, please complete the form below. Our dedicated team is here to help you every step of the way.
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Need Quick Answers?
Call us at +1 877-747-8292, and we'll make your home comfort journey effortless.
Call us at +1 877-747-8292.
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